What is 5.5×10^4 multiplied by 2.2×10^−8 ? Write the answer in scientific notation.(1 point)

Question

Responses

1.21×10−4
1.21 times 10 superscript negative 4 baseline

12.1×10−4
12.1 times 10 superscript negative 4 baseline

1.21×10−5
1.21 times 10 superscript negative 5 baseline

1.21×10−3
1.21 times 10 negative cubed

Answer 1

To multiply numbers in scientific notation, you multiply the coefficients and add the exponents.

The coefficient of 5.5×10^4 is 5.5.
The coefficient of 2.2×10^−8 is 2.2.

Multiplying the coefficients, we get 5.5 × 2.2 = 12.1.
Adding the exponents, we get 4 + (-8) = -4.

Therefore, the answer in scientific notation is 12.1×10^−4.